Green Party leader Zack Polanski has said he wants to stand in the by-election triggered when the former Labour Party leader Sir Keir Starmer announced he would be stepping down as MP for the North London seat of Holborn and St Pancras.

Former PM says it is right time to go, which will trigger byelection that Greens’ Zack Polanski could target

Sir Keir Starmer told the Camden New Journal that he would focus on issues such as “defence, security, trade and technology".